His father had a Basilisk named Gorgon, it was a formidable creature, with incredible speed, size, and natural armor that only the strongest steel was able to penetrate.
Gorgon was the first the devil lord killed, taking it by surprise. So they needed to take this one by surprise as well, with adamant arrows magically infused to penetrate and of course, always avoiding its lethal sight. Not that Viktor was afraid of its sight, he earned immunity at his twelve, but his team wasn't immune.
They needed to be really prudent, for only a high magician, with the right discipline, could return petrification back to normal. However, that was not the most lethal weapon on the basilisks' arsenal, according to Adam.
His most lethal weapon was its poison, which could affect a Hell's duke, which mean
